EP 1337672 A1 20030827 - QUENCHING METHOD AND APPARATUS
Title (en)
QUENCHING METHOD AND APPARATUS
Title (de)
VERFAHREN UND VORRICHTUNG ZUM ABSCHRECKEN
Title (fr)
PROCEDE ET APPAREIL DE TREMPE
Publication
Application
Priority
- GB 0105308 W 20011130
- GB 0029281 A 20001130
Abstract (en)
[origin: US7147732B2] A hot object is quenched after heat treatment. A hot gas stream having at least 20% by volume of hydrogen is taken from for example a carburising chamber of a furnace. The gas is cooled by passage through a heat exchanger, and is compressed in a compressor. The compressor has an aftercooler (not shown) to remove heat of compression from the gas. The cooled, compressed gas flows through nozzles into a quenching chamber. The gas leaves the nozzles at a velocity of at least 50 m/s and impinges upon the hot metal object so as to effect its quenching.
IPC 1-7
IPC 8 full level
C21D 1/613 (2006.01); C21D 1/767 (2006.01); C21D 9/00 (2006.01)
CPC (source: EP US)
C21D 1/613 (2013.01 - EP US); C21D 1/767 (2013.01 - EP US); C21D 9/0062 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0244430 A1 20020606; AT E307909 T1 20051115; AU 2211302 A 20020611; DE 60114446 D1 20051201; EP 1337672 A1 20030827; EP 1337672 B1 20051026; GB 0029281 D0 20010117; US 2004050465 A1 20040318; US 7147732 B2 20061212
DOCDB simple family (application)
GB 0105308 W 20011130; AT 01998664 T 20011130; AU 2211302 A 20011130; DE 60114446 T 20011130; EP 01998664 A 20011130; GB 0029281 A 20001130; US 43327203 A 20031014